One vertex per element, one color per generator, with an edge from x to x·s.
(2,7)(3,10)(9,16)(11,12)(18,22)(20,28)(23,25)(26,32)(33,34,40,44)(35,43,39,38)(36,45,47,41)(37,46,48,42)(1,2,6,7)(3,8,10,5)(4,9,14,16)(11,13,12,15)(17,18)(19,25)(20,24)(21,22)(23,27)(26,31)(28,29)(30,32)(33,35,40,39)(34,38,44,43)(36,42,47,46)(37,45,48,41)(17,18,21,22)(19,23,27,25)(20,24,28,29)(26,30,32,31)(33,36,40,47)(34,41,44,45)(35,42,39,46)(37,43,48,38)(1,3)(2,8)(4,12)(5,7)(6,10)(9,15)(11,14)(13,16)(17,18)(19,23)(20,24)(21,22)(25,27)(26,30)(28,29)(31,32)(33,37,40,48)(34,42,44,46)(35,45,39,41)(36,38,47,43)(1,4,6,14)(2,9,7,16)(3,11,10,12)(5,15,8,13)(17,19,21,27)(18,23,22,25)(20,26,28,32)(24,30,29,31)(33,38)(34,35)(36,37)(39,44)(40,43)(41,42)(45,46)(47,48)(1,5,6,8)(2,3,7,10)(4,13,14,15)(9,12,16,11)(17,20)(18,24)(19,26)(21,28)(22,29)(23,30)(25,31)(27,32)(33,39,40,35)(34,43,44,38)(36,46,47,42)(37,41,48,45)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.